NPA-NXX - 312-604
This is the 312-604 subcode (NPA-NXX) prefix page. Follow a prefix to find the number you are looking for. We divide our pages up to make them more user friendly to navigate!
The 312-604 subcode mainly covers Chicago in Cook county. But other numbers maybe included as well.
We have a database of information derived from the public phone records of Illinois state. Many of the numbers in this subcode are Regular Landline registered to Xo Communications. We hear they employ a large number of people in the Illinois office.
Recently there have been an increase in reported calls, we've had over 5194675 comments across our systems for the 312-604 subcode.
Looking for a different number? Follow a link below to see our recently active.
804-722-2204 952-229-1396 713-221-5806 402-219-8285 702-550-7573774-307-7660 202-681-9565 707-657-2775 786-485-7436 787-482-7949